DD_SetBackBufferSize  210 modules/dx_hw/dx_hw.h GF_Err DD_SetBackBufferSize(GF_VideoOutput *dr, u32 width, u32 height, Bool use_system_memory);
DD_SetBackBufferSize 1311 modules/dx_hw/dx_window.c 			return DD_SetBackBufferSize(dr, evt->setup.width, evt->setup.height, evt->setup.system_memory);